I generally found khanacademy to be a good resource for general chemistry and organic 1. However there
still doesn't seem to be a really good resources out there for the latter parts of organic 2.
In terms of a periodic table, ptable.com is the best one out there.
A really good video on hyperconjugation can be found here
I always found the chem help subreddit to be very helpful for pretty much any complicated topic.
A good free online textbook on NMR
I found these videos from khanacademy to be very helpful for getting a feel for physics 2:
potential energy 2